Fluid dispensing device



March 28, 1939. J, c GRIESEMER 2,152,588 I FLUID DISPENSING "DEVICE;

Fi led May 26, 1958 2 Sheets-Shet 1 zi-i 1 2 3 3 I 2 FIG. E

12 Z5 22 27 x I .(NVENTOR. Jaw/v 60/555/1151?! A TTORNEY J. C, GRIESEMER FLUID DISPENSING DEVICE March 28, 1939.

Filed May 26, 1938 2 Sheets-Sheet 2 INVENTORQ Jaw/v 6T 6k/5SEM6'B A TTORNEX Patented Mar. 28, 1939 um'rao srarss "-PAraNrorr-ics Application May 26; 1938, Serial No. 210,264

6 Claims. (o 221-84) My invention relates to fluid dispensing de-- vices, such as gasoline pump nozzle portions, and to elements thereofadapted to other. purposes.

In dispensing gasoline, as from wayside stations to automobiles, occurred upon placing the pump hose nozzles into the intake tubes of the receiving tanks, resulting in disastrous explosions and fires, with the consequent injury to, or loss of life of, the attendants, and damage to property.

Static charges of electricity are generated by the flow of gas through tubes or nozzles of certain materials, such as those of rubber, or. having rubber linings, such that, when the tubes or nozzles are approached to the tanks, the charges are discharged as sparks, to ignite the gas or vapor,

which is extremely volatile, and easily ignitable in the vicinity of the intake tubes.

Also, and especially in modem automobile construction, these intake tubes have become longer and more irregular in shade, whereby they are provided with hard, or sharply bent, elbows or turns along their length from the points of entry to the tanks to the points of admitting the gasoline; this feature resulting in .inability to properly place the nozzles in the tank openings, preventing the escape of air, spilling the gas, and

having other disadvantages.

Gasoline pump nozzles are of difierent sizes,

even at the same station, and are supported,

when not in use, by holders or hustlers, such that a hostler adapted to a nozzle of one length may not be adapted to a nozzle of another length.

The nozzles are subject to hard usage, such as dropping, usually on concrete, or other hard surface, coming into contact with the metallic pump bodies, and other abuses, such that they are Ire- Thus, with all of the above-mentioned factors of danger from sparking, the difllculty of fitting the nozzles to modern intake tubes,'the hard service, likelihood of damage to the nozzles, and other factors, the provision of a device to overcome all such disadvantages in this and other fields,vpresents a very'particular problem, which.

to the best 01' my knowledge has never, prior to my invention, been solved in any one tubular structure, or so well in any of the separate factors.

electrostatic sparks have I tion, taken t Fig.

Accordingly, it is one object oi'my invention to provide a tubular structure for dispensing gasoline, or fluids or liquids oi like explosive, or readily inflammable character, that shall prevent, or reduce, the likelihood of damage from such cause. 5 Another object of the invention is to provide a fluid dispensing tube, or like device, of the aboveindicated character, that shall be readily adapted to tank intake tubes of practically all shapes now employed. Another object ormy invention is to provide a tubular structure of the above, or like, character that shallbe less subject to the damage indicated, and that shall lend itself to more lar devices heretofore employed.

Another object'of my invention is to provide a ready repair, and salvaging of its parts than simi 1 tubular structure that shall combine the aboveand other objects in any number and relation.

Another object of the invention is to utilize the parts of the device, in any of its character istics herein disclosed, for equivalent or other purposes for which they are adapted.

A further object or the invention is to provide a device 01' the above-indicated character that shall be simple and durable in construction, economical to manufacture, and effective in its operation.

With such objects in view, as well as other ad-v vantages which may be incident to a utilization of the improvement, the invention comprises the elements and combinations thereof hereinafter set forth and claimed, with the understanding that the several necessary elements constituting the same may be varied in proportion, arrangement, texture, and other features, without departing from the spirit and scope of the invention as intended, and as set forth in the drawings,

specification and claims. I 1 v w In order to render the invention more clearly ,40

understoodmeans are'shown in the accompany- 7, ing drawings for carrying the same into practical effect, without limiting the improvements in the useful applications thereof to the particular constructions shown and described, which aresgiven merely by way of example. In the drawings: Figure 1 is a view, in side elevation, of a tubu lar structure constructed in accordance with one form of the invention;

Fig. 2 is a view, in vertical central plane sec- Fig. 3 is an enlarged longitudinal-detail sec i d tional view, in longitudinally extended form, or J5 Substantially along the line 2"-'-2 yof"' 7 an 'outer sheath'member, as viewed in Fig. 2,

and taken along the line 3-3 of Fig. 1; Fig. d is a view,'similar to Fig. 3, of the structure thereof in longitudinally contracted iorn Fig. 5 is a side elevation of the device, as it appeers in service connected to a hand valve; and

Fig. 8 is a perspective view, showing an automobile gasoline tank, and an intake tube in section, in which a nozzle of the invention is disposed.

Referring to Figs. 1 and 2, a unit proper, or the parts thereof severally and in various combinations, comprises a tubular adapter element is. as or brass, having an externally screw threaded end "section it, adapting the element for attachment to a conduit or hose supply line, or equivalent structure, such as a gasoline service valve ii and a hose i8 (Fig. 5). An opposite end is of the adapter has a serrated, or otherwise treated or prepared outer surface, for telescopically receiving thereover a flexible tube 22 of non-sparking material, such as Neoprene, synthetic rubber,-

Throlrol, or any other material that is flexible, and adapted for the use of handling gasoline, other motor fuels, petroleum products, and any of various other gaseous or liquid fluids.

Means, such as a thin metal ferrule 28, as of brass, may be held tightly to the inner tube it telescopically thereover, to press the yieldable walls of the tube 22 against the serrated end it, or the parts, including the adapter it, the inner tube 22 and the ferrule 23 may be otherwise attached to each other, as by crimping the ferrule to the inner tube, and soldering the ferrule to the adapter.

A longitudinally extensible, laterally flexible metallic tubular structure, or outer sheath ti for the inner tube 22, is constructed of thin metal stripping, as of brass, bronze, or other metal, or composition of non or low electrostatic spark characteristics for its service as a gasoline dispensing tube, or 'of further material dependent upon the particular use to which it is put, or

' other reason.

In its service as a gasoline dispenser, as shown, the sheath id is of sufilciently larger interior diameter than the outer diameter of the inner tube 2t to allow free longitudinal relative movement between the sheath and the tube, as will appear, and not to interfere with free lateral flexing of the composite structure; the sheath being secured, at one end, to the adapter iii, as by soldering, and extending, in its elongated or extended state, to a position beyond the other, or mouth, end of the inner tube 22. At the corresponding end of the sheath 2?, the latter is provided with a non-arcing ferrule, or tip element, 28, as of brass or other material mentioned, which telescopically fits over the sheath, secured thereto, as by soldering, and has a reinforcing inturned outer end flange it.

As shown more clearly in Figs. 3' and d, the strip from which the sheath it is constructed, is of substantially s-section having relatively long straight portions 32 and 33 of small and large diameters, respectively. The small diametered portion 32 has an outwardly turned flange tl, and the large ,diametered portion 33 has an inwardly turned flange 38, so that, when the strip is hellcally wound, to form the tubular structure, or sheaththe flange portions 38 overlap the flange portions 3?. This arrangement, in addition to rendering the structure laterally flexible, renders it longitudinally extensible, as from its contractarsas ed conditioner Figs. 1, 2 and 3.

.Thus. when operating as a gasoline pump nozzle element, the structure adapts itself to hustlers,

whether of exact fit or not, or, in other words, two

or more such nozzle elements of difierent actual lengths may fit hostlers oi the same size, and the extensible feature has other advantages in other fields, such as not requiring to be cut to exact length when being installed as a conduit for anypurpose.

As shown in Fig. 5, the composite tubular structure having the component parts above set forth, is secured to the hose it, through the valve H, which further comprises a valve plunger, or operigiging rod $2, an actuating handle 63, and a guard Fig. 6 illustrates the adaptability of the device of the other figures to an intake tube 371 of an automobile gasoline tank dd. lhe tube til is illustrative of a tube of modern practice, having relatively acute, sharp or hard bends or elbows.

With the device of the invention operating as a gasoline pump nozzle, it may be inserted deeply into the tube M, and, at the same time, allow the escape of air, without spilling the gas from back pressure, by reason of the grooved or corrugated \outer surface contour of the nozzle; this feature cing in marked contrast to stiff or tapered noaales, which can only be placed short distances into the intake tubes, and cause spilling of the as.

By reason of the non-static generating, character to the inner tube 22, grounded to the adapter is, and the fact that the gasoline touches the outer sheath it before being discharged, and by reason of the fact that each of the other parts is of low or non-arching character, the device is extremely free from danger from sparking, andreplacing the entire unit, and it has many other advantages, such as providing for maximum delivery of gas, renderlng'it an provement genorally in the art to which it relates.

I claim as my invention:

l. A tubular structure for dispensing gasoline and the like, comprising a metallic outer sheath of hellcally wound strip material rendering it longitudinally extensible and laterally flexible, and non-sparking means in the sheath protecting the same against leakage laterally therethrough of liquid flowing through the structure.

2. A tubular structure for dispensing gasoline and the like, comprising an adapter, a flexible inner tube secured at one end to the adapter, and an outer metal tubular sheath helically wound to tubular form from strip material of substantially ti-section having overlapping edges longitudinally interlocking each other and rendering thesheath laterally flexible and longitudinally extensible.

3. A tubular structure comprising an adapter, a flexible inner tube secured at one end to said adapter, and an outer metal tubular sheath hellcally wound to tubular form from strip material of substantially I S-section having overlapping d to its extended condition of emeeee edges lnterlocwng each other lougltuelly ol the structure and rendering the sheath laterally fiexible and longitudinally extensible.

4. A tubular structure for dispensing gasoline and the like, comprising a flexible inner tube, and an outer metal sheath helically wound to tubuler form from strip material oi substantially sectlon having overlapping edges lnterlecltlng each ether longitudinally cf the structure and rendering thesheeth laterally flexible and loneltuclinully extensible.

5. A tubular structure comprising a flexible luner tube, and an outer metal sheath helically wcund te tubule:- tc from strip meterlel cf euhsteuwefiy Qeectlcn having overlapping edges :lnterlceg each other longitudln of the structure and rendering the sheath laterally flexlble and longitudinally extensible.

6. A tulauler structure for dispensing gasoline and the like, ccmprmlng an adept/er, a. flexible h1- ner tube having nomstetlc characteristics and. secured at one end tax the adapter, and an outer mete! tubular sheath hellcally weund to tubular form frem strip material of substantially e-sew tiou having overlapping edges lengltudlnelly in terlcehlng each ether encl remleelng the ehecth laterally flexible. 

